package com.acme.task5;
	public static void main(String[] args) {
		String str=args[0];
		for(int i=0;i<str.length();i++){
			char ch=str.charAt(i);
			if (!Character.isDigit(ch)){
				System.out.print(ch);
				if(ch=='-'||ch=='+'){
					System.out.print(ch);
				}
			}
		}
	}

}
